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authorRose Hogenson <rhogenson@posteo.net>2022-01-11 22:01:23 -0800
committerRose Hogenson <rhogenson@posteo.net>2022-01-11 22:01:23 -0800
commit68986fe0410584c6934c835bb0ee784655f5f8c5 (patch)
treed51bc2f3e09df35ef81b7a0c462ff555b4344701 /csc/gensym.csc
parentAdd a first implementation of a macro expander. (diff)
downloadchromatopelma-68986fe0410584c6934c835bb0ee784655f5f8c5.tar.zst
Move scheme compiler into a separate directory.
Diffstat (limited to 'csc/gensym.csc')
-rw-r--r--csc/gensym.csc25
1 files changed, 25 insertions, 0 deletions
diff --git a/csc/gensym.csc b/csc/gensym.csc
new file mode 100644
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--- /dev/null
+++ b/csc/gensym.csc
@@ -0,0 +1,25 @@
+(define-library (csc gensym)
+ (export
+ gensym
+ gensym=?)
+ (import (scheme base))
+ (begin
+
+
+ (define-record-type <gensym>
+ (make-gensym id)
+ gensym?
+ (id gensym-id))
+
+
+ (define (gensym=? s1 s2)
+ (= (gensym-id s1) (gensym-id s2)))
+
+
+ (define *next-id* 0)
+
+
+ (define (gensym)
+ (let ((sym (make-gensym *next-id*)))
+ (set! *next-id* (+ 1 *next-id*))
+ sym))))